The temperature dependence of space charge accumulation and DC current in XLPE power cable insulation

Author

Lim, F.N. ; Fleming, R.J.

Author_Institution

Dept. of Phys., Monash Univ., Clayton, Vic., Australia

fYear

1999

fDate

1999

Firstpage

66

Abstract

A cylindrical XLPE power cable sample with 6 mm thick XLPE insulation was heated in stages from 30°C to 90°C with 50 kV DC applied. At each temperature the current through the XLPE and the accumulation of space charge within it were recorded over several hours. The equilibrium space charge and current densities increased rapidly with increasing temperature. Electron injection/extraction at the electrodes and a spatially-inhomogeneous distribution of permanent dipolar molecules in the XLPE bulk are indicated

Keywords

XLPE insulation; current density; power cable insulation; space charge; 30 to 90 degC; 50 kV; DC current; XLPE power cable insulation; current density; cylindrical cable; electron extraction; electron injection; equilibrium space charge; permanent dipolar molecules; space charge accumulation; temperature dependence; Cable insulation; Charge measurement; Conductors; Current density; Current measurement; Electrodes; Power cables; Space charge; Temperature dependence; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 1999 Annual Report Conference on

Conference_Location

Austin, TX

Print_ISBN

0-7803-5414-1

Type

conf

DOI

10.1109/CEIDP.1999.804594

Filename

804594